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Associated Press
Venezuela's interim President Nicolas Maduro gives a thumbs up as Argentina's soccer legend Diego Armando Maradona sits behind him as they leave after paying their respects at the burial site of late President Hugo Chavez in Caracas, Venezuela, Friday, April 12, 2013. Maduro, who served as Chavez's foreign minister and vice president, is running against opposition candidate Henrique Capriles in Sunday's presidential election.

CARACAS, Venezuela — Nicolas Maduro hopes to ride a tide of grief into Venezuela's special presidential election today and win voters' endorsement to succeed the late Hugo Chavez, the divisive larger-than-life leader who chose him to carry on the messy, unfinished Chavista revolution.

That will mean inheriting both a loyal following among the poor and multiple problems left behind by Chavez, troubles that have been harped on by opposition challenger Henrique Capriles.

Although he's still favored, Maduro's early big lead in opinion polls sharply narrowed in the past week as Venezuelans grappled with a litany of woes many blame on Chavez's mismanagement of the economy and infrastructure: chronic power outages, double-digit inflation, food and medicine shortages. Add to that rampant crime — Venezuela has among the world's highest homicide and kidnapping rates.

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Maduro, a former union activist with close ties to Cuba's leaders who was Chavez's longtime foreign minister, hinted at feeling overwhelmed during his closing campaign speech to hundreds of thousands of red-shirted faithful Thursday.

"I need your support. This job that Chavez left me is very difficult," said Maduro, who became acting president after Chavez succumbed to cancer March 5. "This business of being president and leader of a revolution is a pain in the neck."

Capriles, a 40-year-old state governor who lost to Chavez in October's regular presidential election, hammered away at the ruling socialists' record of unfulfilled promises as he crisscrossed Venezuela.